33705389 has 2 divisors, whose sum is σ = 33705390. Its totient is φ = 33705388.

The previous prime is 33705377. The next prime is 33705391. The reversal of 33705389 is 98350733.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 8655364 = 5005^2 + 2942^2 .

It is a cyclic number.

It is not a de Polignac number, because 33705389 - 2²⁴ = 16928173 is a prime.

It is a super-2 number, since 2×33705389² = 2272106495282642, which contains 22 as substring.

Together with 33705391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33705319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16852694 + 16852695.

It is an arithmetic number, because the mean of its divisors is an integer number (16852695).

Almost surely, 2^33705389 is an apocalyptic number.

It is an amenable number.

33705389 is a deficient number, since it is larger than the sum of its proper divisors (1).

33705389 is an equidigital number, since it uses as much as digits as its factorization.

33705389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 33705389 is about 5805.6342461440. The cubic root of 33705389 is about 323.0227533358.

The spelling of 33705389 in words is "thirty-three million, seven hundred five thousand, three hundred eighty-nine".